Lots of info on the links you guys provided, yesterday I took a trip up to city checking store by store, the dry feeds available, nothing different with what I had mention before, but I think Danzo is reacting mainly to the corn in the feed, I was able to do a trial feed him some rice which he did not react to, he must have gotten two or three meals and yesterday I feed him some corn and within an hour or so, I could have seen some bumps on the skin not as severe as before but he reacted to the corn. So here goes my reason for concluding corn allergy. So during my in the city for a corn less feed for Danzo I was luck and got a feed with no corn, but with cereal, it's a high energy adult dog feed with a protein content of 30% , I figured I'll give it a try, and giving that my wife has a 2yrs plus terrier puddle (Ruff) who is very energetic , same feed can be for both Danzo and ruff, so I feed Danzo two meal from this new feed and he has not shown any bumps, ruff has gotten one meal from new feed seems to like it less than Danzo but he'll get use to it. There was only two bags left at the store so I be call to ask the store manager to keep the second bag for me, said that they will be getting a constant supply and should be placing an order next week.